COLE CAMP, Mo -- Sgt. Scott Meyer of the Missouri Highway Patrol said Robert B. Blurton was arrested at 12:10 a.m. Saturday in Garnett, Kan. Blurton is a nephew of Donnie and Sharon Luetjen, two of the three people murdered this month in their home.

The investigation is ongoing. Police are still looking for more suspects. Investigators say DNA and a 911 tape are their main pieces of evidence.

The bodies of Donnie and Sharon Luetjen and their 15-year-old granddaughter Taron Luetjen were found June 9 at their home.

Blurton is charged with three counts of first-degree murder. Officers say Blurton surrendered peacefully and has been cooperative.